I have experienced the sensation over and over again,
Back in middle school, Me and my friends usually will do a hide and seek or "try not to get scared challenge"
Our school is pretty big, its a six floor building with long corridor to separate classes. we usually will wait at a local gaming store (My country have places where we can rent computer so we can use it). at pretty much evening. we will break in to school (the fences is pretty easy to get over with), and go to the fifth floor, so we will bring Drink, food, flashlight and other things, and we will choose who will be the seeker. in the end, I was the seeker, so I count to 20, and others will hide. after counting to 20, I search around the school to catch the seeker, its feel like really scary because the corridor and the room are very dark, and I can hear footsteps of my friend trying to find a good hiding spot. put its give me advantage. because I can see the hider flashlight and hear footsteps. Well I caught almost all my friend, and one remaining. I thought its gonna be pretty easy to catch him, but I was wrong. I search and search for 10 minute straight, Floor after floor cant still find him. then a few minutes later I searched all floor, except for one floor, the sixth floor. The floor is already abandoned and has been rumor for "Ghost Activity". I didn't search it because its just has two room on it. so I foolishly Go to the floor and use flashlight ALONE, at first I can see one room on the end of the corridor the door has a square shape window, I see a fake skeleton so I thought it a science classroom then I see a second room on the right middle of the corridor. I pretty much walk slowly with cautious because its very dark there. so I walk and walk, the corridor full of weird drawing. When I reach the second room, I open the door and What I see is a Whiteboard, 1 teacher table, and 10 Student tables, so I walk around to see a two closets on the side, its pretty much rusted so I thought its impossible for my friend to hide in it. so just leave the room. Put when I gonna walk to the exit door. the closets fell to the floor and the door shuts closely.so my friend that are waiting from fifth floor run to the sixth floor to see me Crouching, crying and shivers. including my friend that hiding. so they calming me down and Help me walk to the fifth Floor, and waiting for me to call for my mom to get me home.
The sixth floor is pretty ominous, even the drawing one of them has a girl strangling in a rope.
Never I imagine writing an entire story on this website and on this topic, because most of it is unrelated
so TL;DR= when I walk to the Second room , the environment feel with Ominous and calm feeling. when I walk to the corridor
its pretty calm and relaxing (and a bit scared).put when I reach and open the second room door, thats where something became really bad. the room feel with ominous feeling, the calm and relaxing sensation I feel from walking throu the corridor isn't there anymore.
Well I have a lot of free time to write an entire story. even tho its most of it unrelated. i hope you enjoy reading it(writing this already giving me goosebumps).